Pipe vise



June 18, 1935. PETERSEN 7 2,005,161

PIPE VISE Filed Feb. 19, 1934 /3 l /6 Edi l3 '1' INVENTOR.

/ ATTORNEYS.

Patented June 18, 1935 PATENT OFFICE PIPE VISE Ihorvald Petersen, Erie, Pa., assignor to Reed Manufacturing Company, Erie, Pa., a corporation of Pennsylvania Application February 19, 1934, Serial No. 711,947

12 Claims.

In the use of pipe vises portions of the vise are commonly detachably connected and such connections ordinarily involve some slack. By reason of this it is necessary for the operator with 5 each operation of the vise to initially take up this slack and this adds to the labor involved in the operation of the vise. The present invention is designed to obviate this objection.

Pipe vises also are preferably provided with 19 inclined jaws so that the torque incident to the pipe under stress tends to wedge the pipe more certainly between the engaging surfaces. In order to add to this effect it is desirable to permit the movable part of the vise to move laterally after this torque stress and the present invention is designed for this purpose.

A common type of pipe vise is provided with a U-frame pivoted at one side and latched at the opposite side. The spreading strain on the U-frame at the latch side with vises as ordinarily constructed is taken up by the pivot of the frame. This places an undue stress on the intermediate parts of the frame. In the present invention this strain is resisted by engaging surfaces at the latch side of the frame. Features and details of the invention will appear from the specification and claims.

A preferred embodiment of the invention .is illustrated in the accompanying drawing as follows:

in section.

Fig. 2 a side elevation of the vise.

Fig. 3 a section on the line 3-3 in Fig. 1.

Fig. 4 a section on the line 4-4 in Fig. 1.

I marks the base. This has an attaching foot, or flange 2. It is provided with the jaw seats 3 on which are arranged inclined jaws 4,the jaws being secured on the seats by screws 4a.

Ears 6 extend upwardly from the base and ends of a U-shaped frame I are arranged between these cars. The ends of this frame have perforations 8 and a pivot pin 9 is extended through one of these perforations and pair of cars. A latch I is pivotally mounted by means of a pin II on the U-frame and this latch engages a shoulder 12 on the frame. As the latch is unhooked the U-frame may be swung back to permit the ready introduction of the pipe and as the 50 frame is swung back the latch engages in the usual manner. It will be understood that under certain conditions pins 9 may be placed through the opening 8 at the latch side as well as the opposite side and thus the U-frame may be definitely secured at both ends.

Fig. 1 shows a front elevation of the vise, partly A head l3 has a jaw l4 mounted in it, the jaw having inclined surfaces forming relatively inclined engaging portions of the jaw 14 and the jaws 4. The head is operated by a screw [5 which is connected with the head by a swivel 5 connection. The screw operates. through 2 threaded portion 11 of the U-frame and is actuated by a handle I8. These parts so far as described are, or may be, of usual construction. The head has flanges H! which extend along the edges of each side of the frame "I. There is a wide clearance Zla between guiding surfaces 20 of the head and guiding surfaces 2| of the frame. Springs 22 are mounted in openings 23 in the head and yieldingly engage the guiding surfaces I 2B. These springs yieldingly position the head in a substantially central position between the sides, but permit the head to swing transversely in response to the twist, or'torque of .the pipe as it is operated upon. This slight side movement of the head is accomplished largely by a slight tolerance in the fit of the screw I5 in thethreaded portion ll of the U-frame. This maybesupplemented by the springing of the screw-l5 and whatever slight slack there may be in the swivel 25 connection between the screw and the head. This permits the pipe to roll on the inclined surfaces and to add to the wedging action between the gripping surfaces.

The U-frame is subjected to very severe lateral strain and where this is in a direction away from the pivot pin 9 the strain in vises as ordinarily constructed is sustained by the intermediate portions of the frame. This puts an undue strain on the frame. In order to avoid this the frame 5 is provided with a shoulder 24 which engages a shoulder 25 on the base, these shoulders affording engaging surfaces so that the .spreading stress on the U-frame is sustained by the base.

In order to avoid the usual slack required in 40 successfully operating the latch (it is also desirable where the connections are detachable) I provide a spring 26. This spring has a coil 21 which extends around a rod 28. The ends of this coil extend through openings 29 in the base and operate against the bottoms of the U-frame, thus yieldingly forcing the U-frame upwardly and, therefore, taking out its slack in the direction of the thrust of the head. This saves the operator a certain amount of turning movement of the screw with each operation.

In order to avoid slack in the swivel the swivel connection comprises a swivel collar l6 which is screw-threaded and screwed on to the screw IS.

The screw terminates in a head We which extends into a socket I3a in the head. The collar 16 may be adjusted on the screw l against a cross 7 member 132) on the head l3 and locked in adjustlimiting the swinging movement of the latch.

Preferably this limits the swinging movement to just what is sufficient for disengagement of the latch. The operator in taking hold of the latch to disengage it merely continues the movement using the latch as a handle for opening the frame.

What I claim as new is:--

1. In a pipe vise, the combination of a base; a

frame extending from the base having guide surfaces; a head slidingly mounted between the guide surfaces, said head and surfaces having a wide clearance;

inclined jaws on the head and base; and means exerting pressure on the head, said means permitting the side movement of the head.

2. Ina pipe vise, the combination of a base; a frame extending from the base having guide surfaces; ahead slidingly mounted between the guide surfaces, said head and surfaces having a wide clearance; inclined jaws on the head and base; means yieldingly positioning the head between the surfaces; and means exerting pressure on the head, said means permitting the side movement of the head. v

3. In a pipe vise, the combination of a base; a frame extending from the base having guide surfaces; a head slidingly mounted between the guide surfaces, said head and surfaces having a wide clearance; inclined jaws on the head and base; transversely extending springs yieldingly posii tioning the head between the surfaces; and means exerting pressure on the head, said means permitting theside movement of the head.

4. In a pipe vise, the combination of a base; a U-frame pivotally mounted at one-end of the base; and a latch locking the opposite end of the frame, said frame and base having engaging surfaces at the latch side of the U,-frame resisting the spreading movement of the U-frame.

5. In a pipe vise, the combination of a base; a guiding frame; detachableco-nnections between the frame and base; a head operating in the frame; and means taking up the slack of the frame; a spring having a connections in the direction of movement of the head.

6. In a pipe vise, the combination of a base; a guiding frame; detachable connections between the frame and base; a head operating in the frame; and yielding means taking up the slack of the connections in the direction of movement of the head. 1

'7. In a pipe vise, the combination of a base; a guiding frame pivotally mounted at one side of the base and having a latch connection at the opposite side of the base; a head mounted in the frame; and means taking up the slack of the pivot and latch in the direction of movement of the head.

8. In a pipe vise, the combination of a base; a guiding frame pivotally mounted at one side of the base and having a latch connection at the opposite side of the base; a head mounted in the frame; and yielding means taking up the'slack of the pivot and latch in the direction of the movement of the head. I

9. In a pipe vise, the combination of a base; a

guiding frame pivotally mounted at one side of r the base and having a latch connection at the opposite sideof the base; a head mounted in the frame; and a spring between the base and frame yieldingly taking up the slack in the direction of the movement of the head. I

10. In a pipe vise, the combination of a base; a guiding frame pivotally mounted at one side of the base and having a latch connection at the opposite sideof the base; a head mounted in the on the base on: which the coil is mounted, the

coil center; and means ends of the spring extending upwardlyinto en- .gagement with the frame.

11. In a pipe vise, the combination of a frame;-a

head slidingly mounted in the frame;, a screw, mounted in the frame andoperating the head; and a swivel connection between the screw and the head comprising means for taking up the slack of the swivel connection. I

head siidingly mounted in the frame, said head having a cross piece and a screw-receiving seat spaced from the cross piece; a screw operating in the frame. and actuating the head, said screw seating on the head; and a collar threaded on to;

the screw and engaging the crosspiece.

THORVALD PETERSEN.

12. In a pipe vise, the combination of a frame ;,a l; 

